Napkin holder



FIG. 1 is a perspective view of a napkin holder showing my new design;

FIG. 2 is a top view of the napkin holder;

FIG. 3 is a left side view of the napkin holder;

FIG. 4 is a front view of the napkin holder;

FIG. 5 is a right side view of the napkin holder;

FIG. 6 is a rear view of the napkin holder; and,

FIG. 7 is a bottom view of the napkin holder.

The broken lines in the drawing illustrate environmental matter and forms no part of the claimed design. 

CLAIM The ornamental design for a napkin holder, as shown and described. 